Vertically Split Compressors
Vertically split (barrel type) centrifugal compressors are the preferred, and sometimes are mandatory design for high pressure or for compressing gases rich in hydrogen. The cylindrical casing ensures good stress distribution and extremely good gas tightness. Unlike the casing, the stationary internal
components of the compressors, with the exception of the seal components,are horizontally split. During the assembly of the compressor they are mounted together with the rotor and are inserted axially into the casing. The end covers are retained by the shear ring segments. Some designs have bolted end covers. A cross-section view is shown in the figure 10.
The inlet and the discharge nozzles are welded to the cylindrical casing or, where heavy wall thickness is involved, are integral with the casing; the pipe work is bolted to these nozzles. These compressors are built for two process stages; in this case they feature two main nozzle pairs.
The main fields of application for barrel type are in handling gases rich in hydrogen; hydro cracking; synthesis of ammonia urea, and methanol; gas lift and reinjection; and transportation of gas in pipelines.
A compressor with one stage is often adequate for compression applications involving low head. For such applications, the user may choose from compressor types that may be vertically or horizontally split. As mentioned earlier, the vertically split version is particularly suitable for high pressure and
for compressing gases of low molecular weight.
Depending on the operating conditions involved the tried and proven systemsemploying labyrinth, mechanical contact, or floating ring seals are used for shaft sealing. Non-contact seals (Dry gas seals) has acquired large acceptance due to high reliability, compactness and simpler control systems.
See Also:
OVERHUNG CENTRIFUGAL COMPRESSORS
OVERHUNG CENTRIFUGAL COMPRESSORS DIAGRAM
Mixed Flow Compressors
Horizontal Split Centrifugal Compressor Diagram
Horizontal Split Centrifugal Compressor detail and operation
Centrifugal Compressors:
Reciprocating compressors :
Vertically split (barrel type) centrifugal compressors are the preferred, and sometimes are mandatory design for high pressure or for compressing gases rich in hydrogen. The cylindrical casing ensures good stress distribution and extremely good gas tightness. Unlike the casing, the stationary internal
components of the compressors, with the exception of the seal components,are horizontally split. During the assembly of the compressor they are mounted together with the rotor and are inserted axially into the casing. The end covers are retained by the shear ring segments. Some designs have bolted end covers. A cross-section view is shown in the figure 10.
The inlet and the discharge nozzles are welded to the cylindrical casing or, where heavy wall thickness is involved, are integral with the casing; the pipe work is bolted to these nozzles. These compressors are built for two process stages; in this case they feature two main nozzle pairs.
The main fields of application for barrel type are in handling gases rich in hydrogen; hydro cracking; synthesis of ammonia urea, and methanol; gas lift and reinjection; and transportation of gas in pipelines.
A compressor with one stage is often adequate for compression applications involving low head. For such applications, the user may choose from compressor types that may be vertically or horizontally split. As mentioned earlier, the vertically split version is particularly suitable for high pressure and
for compressing gases of low molecular weight.
Depending on the operating conditions involved the tried and proven systemsemploying labyrinth, mechanical contact, or floating ring seals are used for shaft sealing. Non-contact seals (Dry gas seals) has acquired large acceptance due to high reliability, compactness and simpler control systems.
See Also:
OVERHUNG CENTRIFUGAL COMPRESSORS
OVERHUNG CENTRIFUGAL COMPRESSORS DIAGRAM
Mixed Flow Compressors
Horizontal Split Centrifugal Compressor Diagram
Horizontal Split Centrifugal Compressor detail and operation
Centrifugal Compressors:
Reciprocating compressors :
No comments:
Post a Comment